Yesterday I had lunch with a friend who thought it was hilarious that my husband and I have been calling our baby the wombat. Early in the pregnancy I read something about wombats and texted a fun fact to my husband. He said "it's not nice to call the baby a womb-bat! That's just where it lives right now." The name wombat just sort of stuck after that! We aren't Australian, so it is a little out of left field
I've heard of lots of people calling their baby the peanut or the bean. Just for fun, what are you all calling your little one before s/he makes his/her grand debut??